Examples and explanations for a course in ordinary differential equations.
ODE playlist: http://www.youtube.com/playlist?list=PLwIFHT1FWIUJYuP5y6YEM4WWrY4kEmIuS
In this video we derive a first order linear differential equation which models a mixing process. This model is used solve mixing or mixture problems: problems where we want to determine the quantity of a solute dissolved in a solution given that more solution is flowing in and mixed solution is flowing out.